The New York Yankees signed free-agent third baseman Kevin Youkilis to a one-year, $12 million contract last month, creating a potentially awkward situation in the clubhouse.

That’s because Youkilis and Yankees reliever Joba Chamberlain have had a running feud for multiple seasons—primarily during Youkilis’ days with the rival Boston Red Sox. Youkilis’ at-bats often featured Chamberlain plunking him with pitches, throwing high and tight to him or throwing behind him. Chamberlain even was suspended for one such episode.

And the new teammates apparently still have some issues to iron out, as Chamberlain told the New York Daily News that Youkilis has yet to return his phone call from last month. The voicemail left by Chamberlain was basically a “welcome to the team” greeting.

“I did everything I can do,” Chamberlain told the newspaper. “I can’t control what Kevin Youkilis does, I can only control what I do and, you know what, we’ll go on from there.”

The Daily News notes that Youkilis seemed to downplay the issue last month during a conference call to announce his signing.

Said Youkilis at the time: “If it was that big a deal, I wouldn’t have been signing with the Yankees. But I don’t think it is that big of a deal. A lot of it is made out within the media and the fans.”